import java.awt.*;

public class Trianglewindow extends Dialog {
     protected Button button;
     protected TextField inputfield;
     protected TextArea outputarea;

     public Trianglewindow (Frame parent, String title, String message)
     { 
	// Create a dialog with the specified title
	super(parent, title, false);
	this.resize(300, 50);
	// Create and use a BorderLayout manager with margins
	this.setLayout(new BorderLayout(15, 15));

	// Create input and output fields
	inputfield = new TextField(15);
	outputarea = new TextArea();
	outputarea.setEditable(false);
	this.add("Center", outputarea);

	// Create QUIT button in panel; add Panel to window
	// Use a FlowLayout to center the button
	button = new Button("QUIT");
	Panel p = new Panel();
	p.setLayout(new FlowLayout(FlowLayout.CENTER, 15, 15));
	p.add(button);
	this.add("South", p);

	// Resize the window to preferred size of components
	this.pack();

     }

     public boolean action(Event e, Object what)
     {
	if (e.target instanceof Button)
        {
		String label = (String)what;
		if (label.equals ("QUIT"))
		{
			if (this.isShowing())
			 {  this.hide();
                            this.dispose();
                         }
                }
         return true;
        }
         return false;
      }

    // When the window gets keyboard focus, give it to button.
    // This allows keyboard shortcuts to pop down the dialog.
    public boolean gotFocus (Event e, Object arg) {
	button.requestFocus();
	return true;
    }

    public void write_msg(String message)
      {
	outputarea.setText(message);
	this.show();
      }

    public void kill()
	{
	  this.hide();
	  this.dispose();
        }

 }